Grinder shield



May 27, 1930.

A. c. FREY GRINDER SHIELD Filed Sept. 26, 1928 tion.

Patented May 27, 1930 UNITED STATES PATENT oFFicE ANDREW C. FREY, F JACKSON, MICHIGAN GRINDER SHIELD Application filed September 26, 1928. Serial No. 308,528.

This invention relates to an improved shield for use incon unction with emery grinders and the like and seeks, among other ob ects, to provide a device which will effectually protect the operator from injury such as might be caused by flying pieces of In the drawings:

Figurel is a side elevation showing the" device in position on a grinder.

Figure; 2 is a top .plan view of the dev1 ce. Figure 3 is a'sectional view of the device on'the line 33 of Figure 2, looking in the direction indicated by the arrows.

Referring now to the accompanying drawings, the numeral l indicates a grinder having an emery'wheel 2 about which is a housing 3 provided with an opening't for exposing the wheel at the front of the housing so that work may be readily introduced to said wheel for the grinding operation.

In carrying the invention into effect, I em ploya base 5 having a concave bottom face to conform tothe curvature of the peripheral wall of the housing, and extending'through each end of the base is a bolt 6 for securing I said base in firm position on the housing.

Formed. medially on the-base 5 and ex-' tending upwardly and forwardly is an arm 7 terminating in a yoke 8, and associated, with said a isa substantially rectangular body frame 9: Formed on the upper side bar. of

K the frame is a shank 10 provided with an eye 11 fitting movably into the yoke 8 and extending through the side portions of the yoke and eyeis a bolt 12 swingingly connecting 1 through.

' by tightening the frame with the arm of the base 5. Formed in the inner edge of the frame 9 is a rabbet 13 and lying in overlying the-upper said rabbet is a glass pane 14. and lower said pane are gaskets 15 and 16.

margins of Mounted on the body frame and overlying the gasket 16 is a clamping frame 17 substantially rectangular to conform frame 9 and having said clamping frame to the body end bars 18 and upper and lower side bars 19. Extending through at each corner thereof is a screw 20 for securing said clamping frame to said body frame.

of the frame are outwardly Formed on the end bar's tilted guard flanges 21, and formed on the upper side bar 1s an outwardly' tilted connecting guard flange 22, said flanges providing an enlarged shielding surface three sidesv of the flanges will deflect ery dust and keep face of the operator and will prevent such particles of and reenforcement for clamping frame.

These steel and emthem' from striking the also tend to particles from being deposited on the glasspane to obscure the view there- Formed medially in the upper side bar of the clamping frameis a notch 23 and extending freelythrough said notch is an adjusting ,bolt 24 screwed through the body frame to engage the housing 5. Carried on said bolt is a locking nut 25. In use, the device may be adjusted tolvarious angular positions relative to the wheel by adjusting the bolt 24, which may be secured in adjusted position Vhat is claimed is:

the locking nut 25.

1. A grinder shield including" a body frame, a transparent element by, and a clamping ment n posltion and carried thereframe securing said eleprovided with shielding means reinforcing thefraine and upstanding about sald'element for shielding-the same.

2. A grinder shield including a body frame,

a transparent element carried thereby, and

a clamping frame securing said element in position and provided with guard flanges re-- inforcing the frame and upstanding about said element for shielding the same.

3. A grinder shield including a transparent element carrie a body frame, thereby, and

a clamping frame securing said element in position and provided with guard flanges reinforcin'g the frame and upstanding about said element for shielding the same, said flanges being tilted outwardly for deflecting flying particles away from said elements.

1n testimony whereof I afiix my signature.

ANDREW 0. FREY. 1,. 8. 

